You almost had an argument there until you decided to go down Spion's "debating" route.
I'll take it from all the insults and anger that nobody on this thread has a single argument as to why it's ok for Hamas to kill innocent children. I guess perhaps you feel embarrassed when somebody pointed out the absolute hypocrisy of raging against all the innocent Palestinians Israel has killed whilst getting a hard on over all the innocent Israelis the Palestinian terrorist groups have killed.
Don't worry, I'll check back every now and again to see if any of the attitudes of posters on this thread have changed, but I won't be responding to any more insults made by people who aren't intelligent enough to construct a well thought out argument or who have completely lost all their humanity and their grip on reality...
Try not to be so hypocritical -
you called me scum for having an opinion you don't like!
I'll answer your question. It's OK for Hamas to kill the odd Israeli child, completely by accident, because in that part of the world, the Israeli state sets the rules of engagement, on account of it being the only party which is in a position to do so. Hamas has very little control over the people who make and launch rockets into Israel, and no control over where the rockets end up. Israel, however, has complete control over its own military, absolute control over air and sea, and a mandate from the Israeli people to gun down Palestinian children like dogs.
1500 dead Palestinian children in the last 9 years tells us that the Israelis have set the bar on civilised behaviour extremely low. Their rules of engagement might well be something along the lines of: 'If it looks Arab, and you can get away with it without witnesses, shoot'. That's why it's OK. The one party in this fight that has the capacity to act like a civilised nation, the one party that has it within its remit to hold back, absolutely refuses to do so. Israel is a barbarian nation, a rogue nation, a terrorist nation, and it is supported by the US and the UK for reasons which have very little to do with justice for the Jews (the usual reason given for supporting Israel's barbarity), or for the Palestinians.
Until someone says 'No', the problems in Palestine might easily be seen as the result of total war - this is a war between a highly motivated and technologically advanced nation and some farmers - or at least, were they allowed to get on with it, they would be farmers. The objective, from the Israeli perspective is to wipe out any hope for a free Palestine. For the Palestinians, it is about survival. This most unequal of wars will continue either until the Israelis have evicted every last Palestinian from their homeland, or until the rest of the world tells Israel to stop, and then acts to make them stop.
It's OK for the odd Israeli child to die by accident because Israel deliberately sets out to kill Palestinian children. It's OK for rockets to be launched at Israel because without them, no-one cares what happens to Palestine. It's OK because the victims, the ones being forced from their homes by European settlers with no connection to Palestine apart from some sort of mythical gene, are going to end up dead or driven from their land unless someone acts.
You don't like it, I don't like it, but the reality is that every dead child, on either side, makes it more and more certain that the world will have to act. If there had been no dead children, there would be no Palestine. Israel would have gobbled it all up and evicted or killed every last Arab, and no-one would have noticed, or said a word.